The Wave Equation 3 (Practical)
| First | First | Last | Results | Question 3 | Question 3a1 | They are separated by | is travelling at | Question 3a2 | Question 3a3 | Question 3a4 | They loose control and crash into a wall an the driver is not wearing a seatbelt. The velocity of the driver falls to zero in | Variable 4 | 3ai) One source of inaccuracy is that every person has a different reaction time. Explain the effect of this problem? | 3aii) Explain how we can reduce the problem? | 3aiii) Another source of inaccuracy is that the time interval between seeing the cymbals clash and hearing the sound is very short. Explain the effect of this problem? | 3aiiii) Explain how we can reduce the problem? | Question 3b | Image 3b | 3b) Which of the results do you think is anomalous, explain your answer? | 3c) Calculate the mean value for the time taken between seeing the cymbals clash and hearing the sound? | Correct Answer | Round Answer | Results | Select the correct Units? | Results Units | Show your workings: | If the driver had been wearing a seatbelt, the time for momentum change would have been 1 seconds. | 3d) Calculate the speed of sound in air using your answer in part C? | Correct Answer 1b | Round Answer 1b | Results 1b | Select the correct Units? | Results Units 1b | Show your workings: |
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| ppefmh | Ed | Garstin | Incorrect | The method for measuring the speed of sound in air is shown below. | Person A holds a pair of cymbals and person B holds a timer. | 567 | 14 | Person B starts timing when they see person A crash the cymbals together. They stop timing when they hear the sound of the cymbals. | To calculate the speed of the sound waves, we divide the distance between persons A and B by the time. | There are two main sources of inaccuracy in this method. | 0.9 | 8528 | tertger | tre | gdg | bdf | The table below shows the results of this experiment. |  | cbv | 453 | 1.747272727272727 | 1.75 | Incorrect | 5 | Correct | gfdg | 543 | 324 | 324 | Incorrect | 2 | Correct | gd | |
| First | First | Last | Results | Question 3 | Question 3a1 | They are separated by | is travelling at | Question 3a2 | Question 3a3 | Question 3a4 | They loose control and crash into a wall an the driver is not wearing a seatbelt. The velocity of the driver falls to zero in | Variable 4 | 3ai) One source of inaccuracy is that every person has a different reaction time. Explain the effect of this problem? | 3aii) Explain how we can reduce the problem? | 3aiii) Another source of inaccuracy is that the time interval between seeing the cymbals clash and hearing the sound is very short. Explain the effect of this problem? | 3aiiii) Explain how we can reduce the problem? | Question 3b | Image 3b | 3b) Which of the results do you think is anomalous, explain your answer? | 3c) Calculate the mean value for the time taken between seeing the cymbals clash and hearing the sound? | Correct Answer | Round Answer | Results | Select the correct Units? | Results Units | Show your workings: | If the driver had been wearing a seatbelt, the time for momentum change would have been 1 seconds. | 3d) Calculate the speed of sound in air using your answer in part C? | Correct Answer 1b | Round Answer 1b | Results 1b | Select the correct Units? | Results Units 1b | Show your workings: |